A prominent pastor in Zimbabwe, Patrick Mugadza, was arrested on Monday after prophesying that President Robert Mugabe, 92, will die on October 17, 2017, police and the pastor’s lawyer said.

Mugadza, from the Remnant Pentecostal Church based in the northern town of Kariba, had become famous by holding a one-man demonstration in 2015 against Mugabe, whom he accused of being incompetent.

The Southern African country has seen growing protests against its leader of 37 years, whom critics accuse of ruining the economy, but who nevertheless intends to seek re-election in 2018, when he will be 94 years old.

Mugadza said in December that Mugabe would die on October 17 and urged him to pray hard if he wanted to avoid that fate.

Mugadza was arrested in Harare on charges of undermining the authority of the president, but the charge was then changed to criminal nuisance, his lawyer Gift Mtisi said.

Police spokesperson Charity Charamba confirmed the arrest.

Mugadza is not admitting to the charge against him, “as he is arguing that what he said was given to him by God during a prayer’’, Mtisi said.

Local Government Minister Savior Kasukuwere said the authorities would clamp down on priests raisng alarm.

“These prophets are becoming reckless and careless, they need to be put on a leash,’’ he said.

Last year, another pastor, Evan Mawarire, launched a protest movement against Mugabe on social media.

Mugadza’s arrest came as the ruling party prepares to throw a huge party to celebrate Mugabe’s 93rd birthday on Feb. 21.